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100   $a20230509c1968uuuu  -u-            -
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200 10$aCharacteristics of visually impaired persons : United States - July 1963-June 1964
210   $cU.S. Department of Health, Education, and Welfare, Public Health Service$aWashington, D.C
517   $aCharacteristics of visually impaired persons 
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996   $aCharacteristics of visually impaired persons : United States - July 1963-June 1964$93307593
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